Solutions

```
def add_uniq number
  # convert to a character array
  # return only unique charachars to a new array
  # looop through each and add 
  new_number =  number.to_s.chars 
  unique     =  new_number.uniq 
  sum        =  0 

  unique.each do |x|
    sum += x.to_i 
  end
  sum 
end

p add_uniq 230323

# receives a number
# returns it in words, eg 235 => two three four 
def number_to_words number

  new_number =  number.to_s.chars 
  message  =  []

  new_number.each do |n|
    message << get_word(n.to_i)
  end
  message * "  "
end


def get_word(value)
  dictionary = {
    0 => 'zero', 1 => 'one', 2 => 'two', 3 => 'three', 4 => 'four', 5 => 'five', 6 => 'six', 7 => 'seven', 
    8 => 'eight', 9 => 'nine' } 
    return dictionary[value]
end

p number_to_words 123
```